Dodge Diesel Over Flow Return Valve Fits Cummins® 12 Valve Bosch P Pump OFV020

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Location: Holland, Michigan
Ships to: US,
Item: 335608410423

Return shipping will be paid by:Buyer
Returns Accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Country/Region of Manufacture:United States
Fuel Pump Type:Fuel Injector Installation Kit
OE Spec or Performance/Custom:Performance/Custom
Manufacturer Part Number:OFV020
Tork Tek:Tork Tek
Manufacturer Warranty:Other

NEW CUMMINS® ADJUSTABLE OVERFLOW VALVE FOR THE BOSCH® P7100 INJECTION PUMP ALL THE PROBLEMS WITH THE BOSCH® OVERFLOW VALVE HAVE BEEN SOLVED! * ADJUST YOUR FUEL PRESSURE WITHOUT STRETCHING SPRINGS * BULLETPROOF DESIGN ELIMINATES HAMMERED SEATS * CURE FOR HARD STARTING AND LOW POWER * USE THE OFV020 WITH STOCK FUEL SYSTEMS * BUILT TO HANDLE WVO AND BIODIESEL * LEAK PROOF CHECK VALVE PREVENTS BACK FLOW TO TANK * PRECISE FUEL PRESSURE FOR THE BOSCH® P7100 INJECTION PUMP * VALVE IS PRESET AT FACTORY TO 30 TO 32 PSI After 14 months of testing, Tork Teknology is releasing the world’s first ADJUSTABLE over flow valve for the Cummins® 12 valve and 4BT, equipped with the P pump. Every single problem that has plagued the Bosch® design has been SOLVED, including eroded seats and broken springs. Finally, there is a reliable P pump overflow valve that is adjustable! Talk to any owner of a Dodge® Cummins® 5.9equipped with a P pump, and he will tell you he has replaced his P7100 overflow valve. Several of the HP guys are on their second and third return valve. WHY? The number one complaint that I hear is “My Cummins® 5.9 diesel is losing power and it’s difficult to start”. With that information, we cut many over flow valves in half to find out why. We were shocked by what we saw! Through 14 months of testing on a flow bench and on our test truck, we know exactly why the Cummins® return valve is not a good design. How a better spring will raise your fuel pressure The Bosch® spring has a history of breaking and it loses its spring force. This dramatically reduces the fuel pressure in your injection pump. This causes low power and your Cummins® 12V will be difficult to start. To cure this problem, we use premium, custom made springs in our overflow valves. The leading spring maker in the U.S. has worked with us to produce a superior spring. The spring manufacturer tested the service life at 1,000,000 cycles to the second power. Basically, infinite life! Our new design seat and ball puts less fatigue on the spring, as well. The Bosch® overflow valve will idle at 15 to 18 PSI. Our valve will show 25 to 26 PSI at idle. The shifter on our test truck vibrates much less and the engine idles 30 RPM faster with the Tork Tek valve. Your engine will run with less vibration and experience an off-idle power increase (great for towing). Customers email every week and say that starting is much easier! The best return valve they have ever used on their Cummins® 5.9. Why bad seats cost you fuel pressure The other common defect in the original valve is seat erosion. Many of the Bosch® overflow valves that we cut in half had rounded seats. Take a look at photo #4. The seat is supposed to be flat. It should look like a tapered cone. It’s rounded from the hammering of the ball. With the seat rounded, the ball is now .050 to .075 deeper in the valve and your spring is now longer. The longer spring exerts less force on the ball. Less spring force equals less fuel pressure. That’s why your valve quit working and you lost fuel pressure and power on your Cummins® P pump. Eroded seats are the second leading cause of failed P7100 overflow valves. (We have sectioned many valves) The other bad design of the OEM valve is the lack of material supporting the seat. From the chord line where the ball touches the seat to the edge of the seat, there is only .009 (three hair thicknesses) of steel to prevent seat erosion. That is not enough material to support the ball. Over time, the ball will hammer the seat to the point where your valve will not work. Tork Teknology redesigned the Cummins® return valve to eliminate failed seats. IT’S A BULLETPROOF DESIGN! Your Cummins overflow valve leaks! Ours is leak proof. We have tested new Bosch® overflow valves and most of them leak. In fact, there is a technical service bulletin stating that the Cummins® valve is NOT a check valve and leakage is OK. Why would you want a valve that leaks? The Bosch® P7100 overflow valve uses a machined seat, which is OK, if not subjected to heat treating. Machined seats leak after heat treat because of thermal distortion. The secret to a leak proof valve is super finishing the seat AFTER heat treat. (see photo #5) It took weeks to perfect the super finishing of the seat and the results are worth it! Our valve has zero leakage and acts as an anti-siphon check valve. The leak proof seat prevents back flow to the tank. Starting your Cummins® 3.9 or 5.9 will never be easier because your fuel system will always be in prime. Starting your Cummins® is now easier Normally, the check valve in the lift pump would prevent back flow. Unfortunately, the lift pump check valve is not a good design. The check valve is the weak link in the Carter® lift pump. If a hose or tube develops a leak from the overflow valve to the fuel tank, fuel can flow by gravity back to the tank. This is made worse if you park on an incline. Starting the engine in the morning is next to impossible. Our design adds a secondary check valve into your Dodge® Cummins® 12V fuel system and prevents back flow to the tank. Your truck will start easier with a leak proof Tork Tek overflow valve! The Tork Tek overflow valve is adjustable! This one feature took weeks to develop. You can now adjust your fuel pressure without taking your valve apart to add shims or to stretch the spring. Simply loosen the jam nut and turn the hex plunger. This patent pending design has a range of 22 to 35 PSI. One customer purchased the valve for one reason. He said that if the spring loses a little tension in five years, he can increase the fuel pressure in minutes by adjusting the plunger. Set your fuel pressure for maximum power Here’s a tip FOR MAX POWER. Peak fuel flow on a stock system is 31 PSI. Fuel flow will fall off above 31 PSI. The Carter® P7100 lift pump is a pressure sensitive pump and pressures above 31 to 32 PSI will show less fuel flow. This has been verified with precise flow meters. Little known secret why lift pumps are failing The current Cummins® Bosch® over flow valve has a .105 inlet hole. The inlet hole size used to be .168 in diameter. Did you ever wonder why the hole size was reduced? The reason is, it protects the OEM seat and spring from damage. The small hole acts as an orifice snubber. Testing has shown that the hole diameter is too small !! The problem is, the small inlet hole has created huge pressure spikes in the fuel system and is wrecking lift pumps. The pressure spikes put a terrible load on the lift pump check valves. The Tork Tek valve features an inlet hole size that reduces pressure spikes by 39.7%. Your lift pump will last longer because it is not subjected to the higher pressure spikes of the Bosch® design. A small but critical change to the inlet hole size has a direct relationship on the life of your lift pump. Bullet proof seat design Our goal was to produce a valve that has superior seat life. After many tests, we discovered that the number, size and location of the outlet holes were critical to the life of the ball and seat. We engineered the new design to put minimal stress on the seat. Less stress means longer seat life. You can now run your Cummins® 12 valve diesel knowing you have the best overflow valve on your Bosch® P7100 injection pump. There is nothing worse than showing your buddy a new performance device on your truck and it’s rusted. We don’t black oxide any of our parts because it is not a rust resistant coating. Tork Tek plates all overflow valves in a two step process. The initial plating is coated with a second anti-corrosion sealant. Plating is a more expensive process, but it’s worth it ! Your valve will look great and remain rust free for many years. OFV020 Upgraded valve with stainless ball and spring and Viton seal The OFV020 is for stock fuel systems that run on WVO or biodiesel. We build the valve with a stainless steel spring and ball. The seal is premium Viton that will stand up to WVO and biodiesel. Several Cummins® owners have purchased the OFV020 with the intention of using an alternate fuel down the road. Included with the overflow valve are banjo seal washers and detailed instructions. Installation is easy and takes only a few minutes. Every Tork Teknology product is covered by a 45 day money back return policy.We guarantee 100% satisfaction with your purchase or you get your money back. The TorkTek adjustable overflow valve is second to none. It is a direct replacement for the Cummins® 12V overflow valve. It will be the last overflow valve you ever buy! Order yours today and take advantage of $1.95 shipping. PLEASE NOTE: THE OFV010 and 020 ARE NOT TO BE USED WITH A FASS OR AIR DOG PUMP. IF YOU RUN EITHER OF THESE PUMPS, USE THE HP OVERFLOW VALVES. THE NEW DESIGN VALVE WILL GIVE YOU MUCH BETTER FUEL PRESSURE AT FULL POWER. NEED HELP IN CHOOSING THE RIGHT VALVE, CLICK THIS LINK Details of Each Overflow Valve OVERFLOW VALVE REVIEWS This is Tork Teknology’s customers have to say: John Hanson of Marion MT said it best! I just got back last night from a trip to Lincoln, NE and back, hauling Clydesdales. We crossed the scales at 23,500#. 4 Clydesdale mares, in a 6 horse slant Trail-ette Constellation trailer, pulled by a ’94 Dodge 3500 4×4, with a 6 speed. I’ve driven big trucks (own Kenworths® and Peterbilts®) for over 30 years and that little 6bt Cummins® just never ceases to amaze me! The valve works awesome! Going down the road, it stays right about 28-30 and stays nice and steady! I don’t see the fluxuations I used to with the old valve, so I’m a happy customer. You do nice work!! At any rate, thanks for the awesome overflow valve! I’ll be watching for more products from you Thanks for the quick shipment. I installed it Monday morning, it worked perfectly. A couple of years ago the original overflow valve was getting erratic. A pressure gauge showed less than 10 at idle and less than 20 at 2000 RPM. Also the pressure varied a lot. The local Dodge® garage wanted $186. I bought an overflow valve through eBay that was non-adjustable. It did not include new seal washers. The spring was retained by a ball bearing pressed in place. I wasn’t impressed but I installed it. Last week we took our fifth wheel trailer on a 250 mile trip through the West Virginia hills (with your valve installed). It performed better than it ever has. Seems to be fueling better. The truck/trailer combination weighs 23,000 lbs. Bob Robinson I’d found your site with the adjustable OFV’s after I went and spent $40 on a piece of $&* Bosch® OFV off ebay…. That barely does 20 at idle and doesn’t flow well at all…. (Pressure drops to 12 psi when under full throttle with a trailer) Matthew Jorgensen Misplaced01 “Highly Recommended. Superior Supplier of a Great Product!!!!!!!!!” JR from Widcat Performance loves the overflow valve and snubber. This is what he says “The truck starts fantastic-crank and boom she’s running. Watched the pressure gauge and it was as close to steady as I have seen!! ….. looks like your R&D paid off here” The trucks overflow valve was shot when i put the new motor in. I had to prime it every time i started it. I put your valve in there and it starts every time, no problem, even when its been sitting for weeks on end. great product! JOE HILL ….fantastic product!!!! Hardtailjohn purchased an overflow valve on June 16,2010. I would definetely say yes. It starts a little faster. fuel pressure is steady at 25# at idle. I have only had the truck back from paint for a few days. So yes overall extremely satisfied with the product and it is everything it was advertised to be and more thanks. Also very nice to have a company that actually cares about their customers very refreshing thanks again. JOHN CHOLENSKI T. Dought “Excellent Product, Works Great, Will Buy More Soon”. I have good news. After replacing the fuel filter, removing the fuel preheater (element looked okay), replaced the fuel feed hose to the lift pump from the tank, I found very little affect on the low fuel pressure I was experiencing. This morning I installed your OFV020 and bingo!, I now have pressure. Idles @ 22# and have 30# @ 2000 RPM’s and @ 65MPH it is a steady 25#. Under acceleration it drops to 20# but recovers as RPM’s increase. I will know better when I put my camper on the truck and take an extended trip to know how the overall operation will be but I believe I am back to normal with my 94 Cummins®. I only have 88865 miles on it. Thanks again and I will look forward to your report on the P7100 pumps. Duane Lietha Hey Rob, Just want to let you what a great product your P7100 overflow valve is. I have a 95 2500 12 Valve and all of a sudden it was a bear to start in the morning. It would stall as i came to the first stop sign on my block, would start back up and once it was warm, there wasn’t a problem. Did some research on the forums and tried replacing the Overflow valve located on the Injection pump with your product. Starts right up in the morning without any stalls…Thanks for the great product..easy to install as well with your instruction..once again..Thankyou I probably saved a lot of money….Probably would have cost me a small fortune to have a shop try to figure it out. Dave Silverbloom skycucv “nice upgrade from stock and looks very well made, A+ Many thanks from U.K”. The first article on the Cummins® fuel system and lift pump is done. Feel free to share the link with your diesel friends. We made hundreds of tests on the P7100 fuel system and the information is available to you. Tork Teknology’s motto is to share the knowledge. That is why we offer this report for FREE ! First in a series. The Cummins Lift Pump FREE DIESEL TECHNICAL INFORMATION Article number two is ready for your reading. This 6 page article is not white bread fluff! It is a very meaty guide on the importance of the inlet line. Getting the inlet line size right, on your performance engine, is critical in achieving maximum diesel horsepower and torque. Use this link to view the instuctions for the Tork Teknology Cummins®Adjustable Overflow Valve.

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